Gate structure

ABSTRACT

A gate slidable along and pivotal on a stanchion carries a roller engaging a cam surface on a cam block to close the gate and stop the gate in a closed position. The block is rotatable on the stanchion and is connected by torsion rods to a collar fixed to the stanchion.

United States Patent [191 Weaver [111 3,714,736 [451 Feb.6,1973

54 GATE STRUCTURE 3/1917 Sundh ..49/238 [76] Inventor: George D. Weaver, Weaver Road, Primary Examiner Kenneth Downey Myrtle Creek Oreg- 97457 Att0rneyBuckhorn, Blore, Klarquist and Sparkman ['22] Filed: May 26, 1971 [57] ABSTRACT [2]] Appl. No.: 146,919 I A gate slldable along and pivotal on a stanchion carries a roller engaging a cam surface on a cam block to [52] U.S. Cl ..49/237, 16/154 close the te and stop the gate in a closed position. [51} Int. Cl. ..EOSf1/04 The block is rotatable on'the stanchion and is COn- [58] Field of Search ..49/237, 238; 16/154 nected by torsion: rods to a collar fixed to the stanchion.

R [56] eferences cued 6 Claims, 4 Drawing Figures UNITED STATES PATENTS 3,089,184 5/1963 Kerman ..16/l54 X /lO 7 14 18 L n n r' 48 v i I I l /Jf l. M I "l PATENTEDFEB 6 Ian 3714736 fir r1 1. I. m I n ZOJ J GEORGE D. WEAVER INVENTOR BUCKHORN, BLORE, KLARQUIST a. SPARKMAN ATTORNEYS GATE STRUCTURE DESCRIPTION This invention relates to a cushioned, self-closing gate structure, and more particularly to a shock-absorbing, self-centering stock gate structure.

An object of the invention is to provide a cushioned, self-closing gate structure.

Another object of the invention is to provide a shock-absorbing, self-centering stock gate structure.

Another object of the invention is to provide a resiliently mounted combined stop and closer for a stock gate.

Another object of the invention is to provide a stopping and closing cam mounted rotatably on a stanchion and mounted on torsion rods paralleling the stanchion and secured to a collar fixed to the stanchion.

In the drawings:

FIG. 1 is a side elevational view of a cushioned, selfclosing gate structure forming one embodiment of the invention;

FIG. 2 is an enlarged, fragmentary, plan sectional view taken on line 2-2 of FIG. 1;

FIG. 3 is an enlarged, fragmentary, plan sectional view taken on line 33 of FIG. 1; and,

FIG. 4 is a fragmentary front view of the roller inclined block.

Referring now in detail to the drawings, there is shown in FIG. 1 a cushioned, self-closing gate structure forming one embodiment of the invention and includ ing a gate providing access through a fence 12 which is interrupted and anchored to a post 14. The gate is of a typical design and is shown with vertical rods 16 spaced vertically along in a frame 18 which is pivotally mounted by brackets 20 to a stanchion 22. The stanchion 22 is preferably made of a steel pipe or bar and set in a permanent base. A follower roller 24 is mounted on a pin 26 attached to the stanchion side of the gate frame 18, and comes to rest in the bottom of a rounded pocket 28 formed in a detent or cam'block 30. A top cam surface 32 of the block 30 is inclined, and when the gate 10 is manually opened in 'either direction, the roller 24 will roll up out of the pocket 28 over rounded edge 34 and up inclined surface 32, and may be manually held in the position shown in phantom in FIG. 1. As can be seen by FIG. 1, when the gate 10 is released, its weight causes the roller 24 to roll back down the inclined surface 32 to the pocket 28, thus closing the gate 10.

The gate is normally a relatively heavy structure so that when it swings to the closed position in which the roller 24 drops into the pocket 28 a considerable pivot ing force is exerted on the block 30. The blocks of the prior art generally like the block 30 have heretofore been anchored rigidly to the stanchion 22 so that the twisting force was transmitted to the stanchion 22, causing material fatigue and early failure. As can be seen in FIG. 2, the block 30 is pivotally mounted rotatably on stanchion 22 by a bushing 36 and is supported by a series of resilient torsion rods 38 positioned in sockets 40 in the bottom of block 30. The rods 38 rest in sockets 42 in the top of anchor block 44 which is attached to the stanchion 22 by a set screw 46. As can be seen by the drawings, the twisting forces on the block 30 are absorbed by the resilient rods 38 with onlzy a small amount of force acting upon the stanchion 2 By varying the number, length and material of the rods 38, it can be seen that this structure may be adapted to gates of different sizes and weights.

A wraparound strip of cushion material 48 is attached to the vertical rods 16 at an elevation that will meet a bumper of a vehicle. The vehicle bumper contacts the strip 48 pushing open the gate as it moves forward. The strip will slide across the bumper without causing damage. The cushion material is provided on both sides of the gate so vehicles may pass in either direction without the driver getting out to open or close the gate.

What is claimed is:

1. In a gate structure,

a stanchion,

a gate,

means mounting the gate pivotally on the stanchion,

a closing and stopping cam mounted rotatably on the stanchion,

resilient mounting means tending to hold the cam against rotation on the stanchion and including a collar fixed to the stanchion and a plurality of resilient rods supported by the collar in positions substantially parallel to the stanchion and fastened to the cam, and

follower means on the gate-and engaging the cam.

2. The gate structure of 'claim 1 wherein the collar includes a plurality of upwardly facing bores receiving the lower end portions of the rods.

3. The gate structure of claim 1 wherein the cam includes a plurality of downwardly facing bores receiving the upper end portions of the rods.

4. The gate structure of claim 1 wherein the cam is slidable along the stanchion.

5. The gate structure of claim 1 wherein the cam is slidable along the stanchion.

6. In a gate structure, a stanchion,

a gate, means mounting the gate rotatably on the stanchion and permitting vertical movement of the gate relative to the stanchion, an annular cam having an upwardly facing notch portion and a pair of inclined portions extending from the notch portion and mounted slidably along and rotatably on the stanchion, I the annular cam having a plurality opening blind bores, a mounting collar fixed to the stanchion below the of downwardly cam 'and having a plurality of upwardly opening 

1. In a gate structure, a stanchion, a gate, means mounting the gate pivotally on the stanchion, a closing and stopping cam mounted rotatably on the stanchion, resilient mounting means tending to hold the cam against rotation on the stanchion and including a collar fixed to the stanchion and a plurality of resilient rods supported by the collar in positions substantially parallel to the stanchion and fastened to the cam, and follower means on the gate and engaging the cam.
 1. In a gate structure, a stanchion, a gate, means mounting the gate pivotally on the stanchion, a closing and stopping cam mounted rotatably on the stanchion, resilient mounting means tending to hold the cam against rotation on the stanchion and including a collar fixed to the stanchion and a plurality of resilient rods supported by the collar in positions substantially parallel to the stanchion and fastened to the cam, and follower means on the gate and engaging the cam.
 2. The gate structure of claim 1 wherein the collar includes a plurality of upwardly facing bores receiving the lower end portions of the rods.
 3. The gate structure of claim 1 wherein the cam includes a plurality of downwardly facing bores receiving the upper end portions of the rods.
 4. The gate structure of claim 1 wherein the cam is slidable along the stanchion.
 5. The gate structure of claim 1 wherein the cam is slidable along the stanchion. 